BFE Engineering
42fb386f60
Replace every em dash with real punctuation (rewrites, not hyphen swaps) in docs, code comments, scripts, configs, and the port records; convert en dashes, curly quotes, ellipsis glyphs, arrows, and section signs to ASCII; drop machine-writing tell phrases from living docs. ADR titles now use a colon. The M2 bring-up DTS model string carried an em dash into the patch series and its record echoes; fixed at both, and the full series re-verified to apply cleanly onto pristine 6.18.46. One comment in freshness.h deliberately names the em dash glyph the UI renders as the unknown mark; that is data, kept as prose naming it. Verified: cargo tests (sim, config-lint, rs485-bridge), shellcheck, both driver MC/DC harnesses, patches-apply.
45 lines
1.4 KiB
Rust
45 lines
1.4 KiB
Rust
//! Micro-benchmarks for the RS-485 bridge dispatch path: same dependency-free
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//! fixed-iteration pattern as sim/benches/sim_bench.rs: human timings to
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//! stdout, one JSON line per benchmark to stderr for CI trend capture.
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//!
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//! Run: `cargo bench` (or `cargo run --release --bench bridge_bench`).
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use std::time::Instant;
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use warden_rs485_bridge::{handle_control_line, Bus};
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use warden_sim::modbus::read_holding;
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fn bench<F: FnMut()>(name: &str, iters: u64, mut f: F) {
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for _ in 0..(iters / 10).max(1) {
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f(); // warm up
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}
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let t = Instant::now();
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for _ in 0..iters {
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f();
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}
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let ns = t.elapsed().as_nanos() as f64 / iters as f64;
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println!("{name:<24} {ns:>9.1} ns/op ({iters} iters)");
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eprintln!("{{\"bench\":\"{name}\",\"ns_per_op\":{ns:.1},\"iters\":{iters}}}");
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}
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fn main() {
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const N: u64 = 1_000_000;
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// Full request->reply dispatch through the locked slave (the per-poll cost
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// a guest master pays on the simulated bus, minus socket I/O).
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{
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let bus = Bus::new(1, 128, 64);
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let req = read_holding(1, 2, 4);
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bench("bridge_dispatch", N, || {
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let _ = bus.slave.lock().unwrap().handle_frame(&req);
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});
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}
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// Control-channel command parse + register write.
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{
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let bus = Bus::new(1, 128, 64);
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bench("control_line", N, || {
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let _ = handle_control_line("holding 5=1234", &bus);
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});
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}
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}
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